No, Natura hasn't emailed me back but the website does say...

Here is what I found about raw diets:

The case for raw

* Provides a fresh diet, without preservatives

* Raw bones are not dangerous. They are soft enough to bend easily and
break well for the dog to digest

* Clears up long-standing allergies

* Fewer visits to the veterinarian for health reasons

* Eliminates dog odour

* Naturally cleans pets' teeth

* Produces much less stool, and stool is firm and disintegrates easily

* Mirrors what a dog would get in the wild

* Develops jaw, neck and shoulder muscles

* Pets have more energy

* Reduces arthritis

* Better weight control

* Pets live longer

* Bitches manage pregnancies better

* Better weight and survival figures in puppies

* A healthy pet fed on raw food manages the bacteria found in raw meat

The case against raw

* All health claims are anecdotal, not the result of long-term research

* Concern about the nutritional balance of these diets. It can be difficult
to formulate a balanced homemade diet in the best of circumstances

* High protein and very high fat diets (fat contributes 40% to 70% of
calories)

* Can be low in calcium, phosphorus, potassium, zinc, iron, manganese and
magnesium

* Can have unbalanced calcium : phosphorus ratio

* Can have excess vitamins D, E, zinc and magnesium

* Questions about quality of ingredients

* Concerns about health

* Raw bones are dangerous for the pet

* Secondary hyperparathyroidism

* Dermatosis (zinc)

* Anemia (iron)

* Orthopedic conditions (Calcium/vitamin D)

* Bioavailability (excess zinc)

* E. Coli/salmonella often found in raw meat

There is so much you can screw up in a raw diet, not to mention the E. Coli/Salmonella that can be present on the meat. That means that it would be in your dogs mouth, in the food bowl, in his feces etc. I would be scared that my daughter would get E. Coli or Salmonella from playing with the dog, letting him lick her face etc.

I would advise using Grapeseed Extract. It kills all of these bacterias, therefore making it safer to feed raw.

Good Luck!